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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B2PLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-311G**
 hartrees
Energy at 0K-157.066048
Energy at 298.15K-157.074668
HF Energy-156.868608
Nuclear repulsion energy124.183515
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B2PLYP/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3241 3241 29.04      
2 A' 3161 3161 19.25      
3 A' 3149 3149 13.78      
4 A' 3110 3110 23.08      
5 A' 3040 3040 34.75      
6 A' 1529 1529 1.01      
7 A' 1516 1516 9.26      
8 A' 1440 1440 3.74      
9 A' 1406 1406 1.89      
10 A' 1245 1245 0.03      
11 A' 1222 1222 0.01      
12 A' 1064 1064 10.07      
13 A' 1009 1009 7.76      
14 A' 952 952 2.94      
15 A' 805 805 3.90      
16 A' 777 777 3.79      
17 A' 366 366 0.21      
18 A" 3226 3226 0.25      
19 A" 3144 3144 24.54      
20 A" 3107 3107 33.00      
21 A" 1509 1509 2.22      
22 A" 1483 1483 3.00      
23 A" 1209 1209 0.70      
24 A" 1155 1155 0.02      
25 A" 1121 1121 4.33      
26 A" 1080 1080 1.50      
27 A" 878 878 8.31      
28 A" 832 832 5.37      
29 A" 346 346 0.64      
30 A" 227 227 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24174.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24174.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP/6-311G**
ABC
0.52061 0.21140 0.18565

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.405 0.000
C2 -0.883 1.281 0.000
H3 1.290 0.943 0.000
C4 0.348 -0.900 0.756
C5 0.348 -0.900 -0.756
H6 1.253 -1.203 1.266
H7 1.253 -1.203 -1.266
H8 -0.569 -1.186 1.259
H9 -0.569 -1.186 -1.259
H10 -1.791 0.671 0.000
H11 -0.913 1.923 0.885
H12 -0.913 1.923 -0.885

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51101.08531.50771.50772.23772.23772.22592.22592.15462.16292.1629
C21.51102.19912.61592.61593.51253.51252.78762.78761.09351.09371.0937
H31.08532.19912.20382.20382.49212.49213.09413.09413.09242.56832.5683
C41.50772.61592.20381.51211.08262.23621.08362.23172.75863.09433.5001
C51.50772.61592.20381.51212.23621.08262.23171.08362.75863.50013.0943
H62.23773.51252.49211.08262.23622.53191.82203.11333.79183.82244.3694
H72.23773.51252.49212.23621.08262.53193.11331.82203.79184.36943.8224
H82.22592.78763.09411.08362.23171.82203.11332.51712.55443.15053.7922
H92.22592.78763.09412.23171.08363.11331.82202.51712.55443.79223.1505
H102.15461.09353.09242.75862.75863.79183.79182.55442.55441.76671.7667
H112.16291.09372.56833.09433.50013.82244.36943.15053.79221.76671.7698
H122.16291.09372.56833.50013.09434.36943.82243.79223.15051.76671.7698

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.614 C1 C2 H11 111.271
C1 C2 H12 111.271 C1 C4 H5 59.904
C1 C4 H6 118.586 C1 C4 H8 117.465
C1 H5 C4 59.904 C1 H5 H7 118.586
C1 H5 H9 117.465 C2 C1 C3 114.788
C2 C1 C4 120.123 C2 C1 H5 120.123
C3 C1 C4 115.431 C3 C1 H5 115.431
C4 C1 H5 60.192 C4 H5 H7 118.098
C4 H5 H9 117.628 H5 C4 H6 118.098
H5 C4 H8 117.628 H6 C4 H8 114.516
H7 H5 H9 114.516 H10 C2 H11 107.756
H10 C2 H12 107.756 H11 C2 H12 108.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.200      
2 C -0.246      
3 H 0.117      
4 C -0.226      
5 C -0.226      
6 H 0.120      
7 H 0.120      
8 H 0.118      
9 H 0.118      
10 H 0.091      
11 H 0.107      
12 H 0.107      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.035 0.122 0.000 0.127
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.666 0.223 0.000
y 0.223 -27.646 0.000
z 0.000 0.000 -27.406
Traceless
 xyz
x 1.860 0.223 0.000
y 0.223 -1.110 0.000
z 0.000 0.000 -0.750
Polar
3z2-r2-1.500
x2-y21.980
xy0.223
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.247 -0.460 0.000
y -0.460 6.864 0.000
z 0.000 0.000 6.370


<r2> (average value of r2) Å2
<r2> 83.775
(<r2>)1/2 9.153